Shock-absorber for vehicles.



A. SEMMIG.

SHOCK ABSORBER FOR VEHICLES.

APPLICATION FILED APR.15. 1914.

laltentd May 4, 1915.

2 SHEETS-SHEET l.

WITNESSES n ik A. SEMIVIIG. SHOCK ABSORBER FOR VEHICLES.

APPLICATION FILED APR. \6, |914.

Patented May 4, 1915.

2 SHEETS--SHEET 2 Attorneys l 1.13am?.

immun STATE-s PA remi oFFIcE.

ARTHUR sEMMIe, oF WHITE PLAINS, NEW YORK,

snack-assonanza Fon vEHIoLEs.

Specitien 91 Lettere Patent.

Patented May 4, 1915.

Application Bled April 16 1914.. Serial N o. $32,275.

To all 'whom it may concern.'

Be it known that. I, ARTHUR SEMMIG, a

citizen" of the United States, residing at White Plains in the county of Westchester and State of New York, have invented certain new and useful Improvements'in Shock- Absorbers for Vehicles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as wil-l enable others skilled inl theiart to which it appertai'ns to make and use the same.

This ,invention comprehends broadly improvements in shock absorbers and hasy particular reference to devices of such character as are adapted to be connected with the elliptical leaf springs of a vehicle.

As a principal object this invention contemplates the provision of a shock absorber which shall. be readily installed in an automobile or other vehicle and it will take up the strain of any shock due to inequalities o'f the road sui-face so gradually as not to transmit any of such shock to the body of the vehicle.

A further object is the provision of a shock absorber which shall take up all sudden strains incident to the travel of the vehicle on a road by means of an alternate compression and expansion of'isuitable coil springs directly connected to the elliptical leaf springs of the vehicle in a prompt sure and efficient manner.

An object of equal importance with thel foregoing is to provide a shock absorber of the type described which is constructed with such regard to proportion, number and arrangementof parts as to be cheaply manufactured will be durable and efficient in operation and may readily be installed upon any standard type of automobile or 'other vehicle with a small expenditureof time and labor and without requiring any alteration in the construction of the tlatter'. I

The above and additional objects are accomplished by such means* as are illustrated in the accompanying drawings and described in the following specification and .then more particularly pointed out in the claims which are appended hereto and 'form a part of this application.

With reference to the draw-ings wherein I have illfustrated the preferred embodiments means' ofsuitable U-bolts` 25.

parts, Figure 1, is a side elevation of my shock absorber interconnected with the ordinary elliptical leaf springs and adapted to be applied to any vehicle, Fig. 2, is a center horizontal sectional view of the matter shown in Fig. land Fig. 3, is an elevational view of my shock absorber as applied to the rear springs of an automobile and supported by the frame thereon.

Proceeding now to the description of the drawings and having particular reference-to the disclosures of Fig. l., the numeral 5, designates the upper portion of a set of elliptical leaf springs connected at oneend inthe usual manner by means of the pins 6, to the lower portion 7, of the sot of springs. Instead of a connection at the opposite end similar to the connectingmeans object above set forth and which comprises mainly the double bell crank lever or rocker arm 8.v This lever 8,' is 'substantially L- shaped and comprises two similar members 9 and 10 which are connected bythe pivot pins 11, 12 and 13.

To the outer most pivot 11 the extremity of the upper portion 5, of the set of elliptical springs is secured. Tothe center pin 12, is similarly secured the lower portion 7 of the set of springs and to the inner most pin 13, is pivoted the keeper or socket member 14. This socket member is provided with the longitudinal recess 15, which is screw threaded to adjustably receive the correspondingly threaded extremityy 16 ofthe pistonrod 17, which is further secured in place by the lock nut 18.

The piston rod 17, is the basic element of my invention and carries at its freeA extremity, the piston head 19, which is Slidably positioned in the metallic tube 20. \This tube 20, is pivotally support/dat 2f, bet een the ears 22 of the U-shaped member 23 ich is located in the center of'the'lower' of springs' 7 and secured to the axle 24` by The cylindrical tube 20 is provided at either 'end with the internal busliiggs 26 and Sil 27, which ai e suitably secured insh with the open ends by any desirable means bushing 2T, which is po i or noiipii'otd end oi' tpertnred :im et 29 to slime .j ton rod l?5 Positioned wiihin the C, 2O l prefere-bly provide the powerful springs 30 and 8l the rmer being coiled around the piston she ri7 and diepoeed be tween the piston lice d 19 end the bushing 27, while the latter beers against the piston heed 19 in one direction und against the bushing 26 in the other. These coil springs are oppositely expansible and it will readily be seen that when the spring 30 lis eompreeied that the spring 3l .will expand and vice versa- The operation ci shock absorber, construction of which lies full* scribed in foregoing will be reefv parent upon n peru il of l im" Meneny' obstacle @nec tei by i vehicle in. its travel the. Sets ci, springs 5 and 7 willl be compressed toward each other by the .ixiwfard .thrust imparted t f. lower spring 7 through the wl xle i i by the inertia of the eer body due to the weight thereof acting the upper 'r and both I VJ 3 s rings will time ooernte upon the double bell crank 8 et d "i ilierent poi nts.. preesion will e 1mii-tiel niet' the end carrying the p quent movement oi eomplished. rod, howeier, will sistefl by the to j epring wiii licrcup the piston head lil fe: Y 20 until this movement is perl consequent compression of the spring; Accordinglyv it will be seen that when enr sudden shock encountered that the :liternate compression rind expansion of the spring contained in Vthe cylinder 2() w gradually take up the strain until tbe pie1 ton head i9 is finally brought to e stop and mede to assume the normal position illnetrnted in Fig. l.

Turning now to the modification o? my device illustrated in 3 it will be seen that esoentielly the same principle is in` volved in the operation of the modified for-m Aon includes tbe eooiict member 37 pivoted the slim-kie *subie bell crank 36a the en rod "I rflf received by the r H9 iovoted at u, the pie- Y :r 39 and weed on. opposite l and bearing against in eli respects the own in Fig, 3 is in conneef L- l v, end, 2.

o have illustrated siribed in the specl and er ingement tion with the forzfr si While in the ion. in the drawings end iiication Sue-li euaptetione emphasize the la minor changes in it. end degree i may make euch s of proportion ov shock abscrl, l *e spirit of my inreizt-ion e@ defined i the appended claims.

.L 'E' ne L 1' Y l, 1n e shock tanned. between vehicle, n "5l ci seid i l :i cylinder posi il reef springs of combination ings for a, oen ends,

voniele, of e ejvlinf r bushings eeourcd in eti-i ope. connections between one oi Seid lmshin and the axle of the veliieie, a. piston rod sli ably mounted in seid cylinder and Working through an eport-ure in the other of seid bushings, e sor-.liet member adjustably receiving the end seid piston rod, a piston head for said rod7 oppositely expansible reSilient means positioned in said c vlinder to operate upon said piston heed and means pivotally connecting said socket member with the adjacent ends of each of the leaf springs forming said elliptical springs of the vehicle.v

In e shock absorber th combination with the elliptical leaf springs of a vehicle of a double bell crank lever, means carried by said lever for pivotally linking 'adjacent ends of said' leaf springs, a socket member also pivotally connected to said bell crank lever, a piston rodl edjustably received by said socket member, e piston head for said rod, an open ended cylinder slidably receivin said piston head, bushings secured in sai open eeuu l to the one between one asf idsT pivote l ends, one of'said bushings being apertured to name to this specification in the presence of receive said rod, pivotal connections between two subscribing witnesses. the other of said busings and the axle of the vehicle and a pair of yieldable means posi- ARTHUR SEMS" 5 tioned in said cylinder and oppositely dis- Witnesses: f

posed with respect to said piston head. CHARLES L. PRIGGE,

In' testimony whereof I have signed my 'CLAYTON A. HAVILAND. 

